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                  <p class="p_Heading1"><span class="f_Heading1">Custom Group</span></p>



  
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                <p class="p_BodyText"><span class="f_BodyText">The </span><span class="f_UIControl">Custom</span><span class="f_BodyText"> group contains a few extended UML elements that might be of use in modeling or designing your system in a <a href="customdiagram.htm">Custom diagram</a>.</span></p>
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<td valign="top" width="690" style="width:690px;"><p class="p_BodyText"><span class="f_BodyText">A </span><span class="f_BodyText" style="font-style: italic;"><a href="package.htm">Package</a></span><span class="f_BodyText"> </span><span class="f_BodyText">is a namespace as well as an element that can be contained in other package's namespaces</span><span class="f_BodyText">.</span></p>
<p class="p_BodyText"><span class="f_BodyText">A </span><span class="f_BodyText" style="font-style: italic;"><a href="requirements.htm">Requirement</a></span><span class="f_BodyText"> is a custom element used to capture requirements outside of standard UML elements. A Requirement expresses required system behavior that can cross several Use Cases. You can connect Requirements to other elements using the </span><span class="f_BodyText" style="font-style: italic;">Realize</span><span class="f_BodyText"> connector to express the implementation of a requirement and hence the <a href="traceability.htm">traceability</a> from user requirements to what is being built.</span></p>
<p class="p_BodyText"><span class="f_BodyText">An </span><span class="f_BodyText" style="font-style: italic;">Issue</span><span class="f_BodyText"> element is a structured comment that contains information about defects and issues relating to the system/model (see the </span><span class="f_BodyText" style="font-style: italic;"><a href="o1478.htm">Defects (Issues)</a></span><span class="f_BodyText"> topic). Affected elements are connected by <a href="trace.htm">Trace</a> connectors.</span></p>
<p class="p_BodyText"><span class="f_BodyText">A </span><span class="f_BodyText" style="font-style: italic;">Change</span><span class="f_BodyText"> element is a structured comment that contains information about changes requested to the system/model</span><span class="f_BodyText"> (see the </span><span class="f_BodyText" style="font-style: italic;"><a href="changesanddefects.htm">Changes</a></span><span class="f_BodyText"> topic). Affected elements are connected by <a href="trace.htm">Trace</a> connectors.</span></p>
<p class="p_BodyText"><span class="f_BodyText">A </span><span class="f_BodyText" style="font-style: italic;"><a href="screen.htm">Screen</a></span><span class="f_BodyText"> provides a stereotyped Class element that displays a GUI type screen; this can be used to express application GUI elements and flows between them.</span></p>
<p class="p_BodyText"><span class="f_BodyText">A </span><span class="f_BodyText" style="font-style: italic;"><a href="uielement.htm">UI control</a></span><span class="f_BodyText"> likewise can be used to express GUI controls.</span></p>
<p class="p_BodyText"><span class="f_BodyText">A </span><span class="f_BodyText" style="font-style: italic;"><a href="test_case.htm">Test Case</a></span><span class="f_BodyText"> element defines what must be set up in order to test a particular feature (see the </span><span class="f_BodyText" style="font-style: italic;"><a href="o1529.htm">Test Cases Window</a></span><span class="f_BodyText"> topic). It enables you to define a set of tests once for a number of elements, and provides greater visibility for tests.</span></p>
<p class="p_BodyText"><span class="f_BodyText">An</span><span class="f_BodyText" style="font-style: italic;"> Entity</span><span class="f_BodyText"> is a stereotyped element that represents any general thing not captured by the element or Class type elements (for example a trading partner). Use of this element is </span><span class="f_BodyText" style="font-weight: bold; color: #ff0000;">deprecated</span><span class="f_BodyText">: it was originally intended to take the role now occupied by a <a href="table.htm">Table</a> element.</span></p>
<p class="p_BodyText"><span class="f_BodyText">To add an element to the current diagram, click on the required icon and drag it into position on the diagram. Set an element name and other properties as prompted.</span></p>
<p class="p_BodyText"><span class="f_BodyText">To add a relationship, click on the required icon, then click on the start element in the diagram and drag to the end element.</span></p>
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